/Engine/Source/Developer/MeshBuilder/Public/MeshDescriptionHelper.h
Build a render mesh description with the BuildSettings. This will update the RenderMeshDescription in place.
void SetupRenderMeshDescription ( [UObject](API\Runtime\CoreUObject\UObject\UObject) * Owner, [FMeshDescription](API\Runtime\MeshDescription\FMeshDescription) & RenderMeshDescription, bool bForNanite, bool bNeedTangents )